If you have an IQ 124 or above, you can join the International High IQ Society. You just have to pass their online test and pay a one-off fee of $80. Only the top 5% of the population are intelligent enough to join.
Not quite that dumb? If your IQ is above 160 you can join the Prometheus Society. Only those in the top 0.003% are smart enough to join. You need to put yourself through complex paid tests supervised by professionals in a few locations around the world.
Finally, if you’re super-smart. you can join The Pars Society. You need an IQ above 175, which is common amongst 0.00003% of the human population (about 220 people).
There is nearly always a desire for the more hardcore to talk to each other and be recognised for being more hardcore. These people are more committed, feel stronger bonds and are more likely to evangelize for you. More so, they’re more likely to feel patronised and, yes, superior to the normal members.
For example, BMW can create a motorbike community, or they can create a community for people who have ridden across USA on their bikes? Or for people who have ridden from Alaska to Argentina. Or around the world. Or even around the world 5 times.
When you cater to hardcore groups, you’re more like to attract these powerful groups. As seen with the intelligent folk, there isn’t just one layer of hardcore. There is an increasing level of mutually satisfactory depth. Plan for, encourage and accommodate this.